The magnificent duet is probably one of the cutest things you’ll see all day.

Mom Amanda recalls that she just got out of the shower and was a bit shocked to find Lydia and Bo singing a song together. She then captured her kids performing the adorable musical duet on tape.

The little girl manages to sing the lyrics of the song in a beautiful manner, but even more wonderful is that Bo was singing along with some of the words, and happily clapping and laughing on the rhythm. The little boy has difficulties with speaking but always manages to open up whenever there’s music involved.

You can just see that these two have such a loving and warm bond together.

Lydia is quite a talented guitar player for her age and Bo just loves to hang around the music and listen to his sister’s beautiful voice. The smile on his face truly speaks more than a thousand words. They both can bond so well over music and definitely enjoy performing as a duo. Dad is a professional musician, so it runs in the family.

Amanda decided to share the video on her Facebook profile for her friends and family to see, but she didn’t realize that it would be shared thousands of times.

“My daughter Lydia was watching Bo while I was in the shower. Came out to this. If she didn’t have a guitar I don’t know if she would know how to babysit him. This is her go to,” mom Amanda wrote on her Facebook page.

The cute video has been seen by over 62 million people on Facebook alone.

Because of Bo’s condition, his vocabulary is limited. However, music is the one thing where Bo truly feels at his best. He currently knows how to use about a dozen words, and he learned all of those words via music.

“It’s proof that music therapy works. Bo is 25 months old and has a 12-word vocabulary. Every word he has learned has been through music and singing,” Amanda added.

Bo’s big sister also has a huge positive influence on him and she loves to help him around and teach him new words, aside from playing with the guitar and singing. His other siblings are always more than happy to help around as well.

Little Bo is currently doing great and has recently walked independently for the very first time. The toddler always had difficulties with physical things because underwent a heart surgery. Mom and dad couldn’t be any prouder.

“[Bo] has changed our lives and humbled us beyond measure. My older children along with us are changed forever because of him. All he knows is how to love. Simply love unconditionally. What more could parents ask for?

She was also amazed by the responses and support that she received from all over the world.

“My messenger has so many messages I haven’t have time to sit down and read them all,” she said to a Manchester Evening News reporter. “I don’t think our little household has stopped to take a breath since I posted the video on Monday.”

“To everyone who has viewed, commented, shared, and messaged us personally, thank you. Thank you for seeing the beauty of this video as it bring awareness to Down Syndrome but also that music therapy rocks.”

You truly have to see this adorable sister-brother musical performance for yourself.